TI-2026-69854 Aliases CVE-2026-107914 GHSA-rcrw-452r-xvqv

Backdrop CMS does not sufficiently protect configuration exports

LOW 35CWE-459Published 2026-10-09 · Updated 2026-10-14

Key facts

Attack vector: Local
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Backdrop CMS from 1.34.0 before 1.34.5 and from 1.35.0 before 1.35.1 does not sufficiently protect configuration exports delivered as compressed archives. Config.admin.inc does not ensure a file_unmanaged_delete operation occurs, so old archives such as config.tar.gz could persist (CWE-459). A local attacker with no privileges can exploit it with high complexity, though an export must first be requested by a user with the Synchronize, import, and export configuration permission.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Backdrop CMS 1.34 before 1.34.5 and 1.35 before 1.35.1 doesn't sufficiently protect configuration exports when delivering a compressed archive. This vulnerability is mitigated by the fact that an export must have been previously requested by someone with the "Synchronize, import, and export configuration" permission. NOTE: CVE-2026-107914 refers to the vulnerability in which config.admin.inc does not ensure that a file_unmanaged_delete operation occurs. Therefore, many archives could persist: config.tar.gz, config_0.tar.gz, config_1.tar.gz, etc. There is a separate config.module issue that could allow remote access by an anonymous user, but only for the one filename config.tar.gz.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0012 1st percentileScored 2026-11-07

Fix Fixed Backdrop (backdropcms): 1.34.5, 1.35.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
backdropcms	Backdrop	1.34.0 to before 1.34.5; 1.35.0 to before 1.35.1	1.34.5, 1.35.1	Patch available	CNA

Backdrop Vendorbackdropcms Affected 1.34.0 to before 1.34.5; 1.35.0 to before 1.35.1 Fixed in 1.34.5, 1.35.1 Patch available CNA

Remediation

Update Backdrop to 1.34.5 for the 1.34 branch or to 1.35.1 for the 1.35 branch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA Backdrop (backdropcms) Fixed in 1.34.5, 1.35.1

Timeline

2026-10-09 Threatist record created from CVE-2026-107914
2026-10-09 Alias added: GHSA-rcrw-452r-xvqv
2026-10-10 Priority changed: MEDIUM → LOW
2026-10-14 CISA SSVC decision points changed

References

Other 3

TI-2019-08480 jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles… CVSS 3.1MEDIUM 6.1
TI-2025-39465 Host Header Injection vulnerability in Backdrop CMS 1.32.1 allows attackers to manipulate… CVSS 3.1MEDIUM 6.1
TI-2023-14781 A stored Cross-site scripting (XSS) issue in Text Editors and Formats in Backdrop CMS… CVSS 3.1MEDIUM 4.8
TI-2022-20387 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS) vulnerability via 'Comment.' . CVSS 3.1MEDIUM 4.8
TI-2022-20386 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8
TI-2022-20385 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences